42745541 has 2 divisors, whose sum is σ = 42745542. Its totient is φ = 42745540.

The previous prime is 42745529. The next prime is 42745553. The reversal of 42745541 is 14554724.

42745541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (42745529) and next prime (42745553).

It can be written as a sum of positive squares in only one way, i.e., 34456900 + 8288641 = 5870^2 + 2879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42745541 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42745498 and 42745507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42745511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372770 + 21372771.

It is an arithmetic number, because the mean of its divisors is an integer number (21372771).

Almost surely, 2^42745541 is an apocalyptic number.

It is an amenable number.

42745541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745541 is an equidigital number, since it uses as much as digits as its factorization.

42745541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 32.

The square root of 42745541 is about 6538.0074181665. The cubic root of 42745541 is about 349.6473754628.

The spelling of 42745541 in words is "forty-two million, seven hundred forty-five thousand, five hundred forty-one".